Look at your fingers. Notice that each finger has three segments. Most humans have hair on the backs of their fingers on the segment nearest to the hand. However, some people have hair on the second segment as well. If you have mid-digital hair you have the dominant gene (H) for that characteristic. If not, you have the recessive gene (h). Again, there is no particular advantage to having it, since it's never enough to keep your hands warm in the winter!
Which gene do you have?
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